physics electric field etc 4th grading

• Coulomb's Law


  The mathematical formula to calculate the electrostatic force vector between two charged particles
• Electric Field


  Imaginary field line that helps explains the interaction between two charged particles
• Michael Faraday first introduced the concept of electric field, which he first called lines of forces
• How to draw electric field lines of protons and electrons

  1. Positive charges have their electric field lines move away from them

  2. Negative field lines have their electric field lines drawn towards them

  3. Electric field lines are represented by arrows
• How to draw electric field lines of protons and electrons close to each other

  The arrows moving away from the positively charged particle will move towards (connect) to the arrows of the negatively charged particle
• How to draw electric field lines of same charges placed close to each other


  Electric field lines of two same charged particles should be repelling
• No electric field line shall intersect
• Electric field is a way to describe the force that electrically charged objects exert on its surroundings
• Electric Flux


  The flow of an electric field through a given area is measurable using electric flux
• Electric Flux Equation


  Electric field is represented by arrows to indicate the flow or movement from a positive charge to a negative charge
• What term refers to the region in which an electric charge experiences a force?
• The electric field lines of positively charged particles move away from it while the electric field lines of negatively charged particles move towards it.
• Electric Potential


  The amount of work/energy needed to move a charge from one reference point to another
• the force on an object with charge q is F = kqQ/r^2
• potential energy stored by a capacitor is U = QV
• electric potential difference (voltage) is the work done per unit charge to move a charged particle from one point to another
• electric potential energy is the work done to bring two charges together from infinite distance
• Electric Potential Energy (J) = K * Q1 * Q2 / r